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(No Model.) 4 SheetsSheet l. R. K. LE BLOND & N. D. GHARD.

ENGINE LATHE.

No. 584,001. Patented June 8,1897.

'W'vwsses JHQZ (No Model.) 7 4 Sheets-sheet 2.

R. K. LE BLOND & N. D. CHARD. ENGINE LATHE.

No. 584,001. Patented June 8, 1897.

(No Model) 4 Sheets-Sheet 3. R. K. LE BLOND 81; N. D. CHARD. ENGINELATHE Patented Junev 8, 1897.

Inwmfiws Maud 55; 3%

12% away (No Model.) 4 Sheets-Sheet 4. R. K. LE BLOND & N. D. UHARD.

ENGINE LATHE.

No. 584,001. Patented June 8,1897.

0.. wnumcron u c UNITED STATES PATENT Orricn.

RICHARD K. LE BLOND, OF LINW'OOD, AND NICHOLAS D. GUARD, OF CINOINNAII,OHIO; SAID CIIARD ASSIGNOR TO SAID LE BLOND.

ENGINE-LATHE.

SPECIFICATION forming part of Letters Patent No. 584,001, dated June 8,1897.

Application filed June 24, 1895.

To all whom it may concern.-

Be it known that we,RIC-HARD K.LE BLOND, a resident of the village ofLinwood, and N ICHOLAS D. OHARD, a resident of the city of Cincinnati,in the county of Hamilton, State of Ohio, citizens of the United States,have invented certain new and useful Iniprovements in Engine-Lathes, ofwhich the following is a specification.

The several features of our invention and the various advantagesresulting from their use, eonjointly or otherwise, will be apparent fromthe following description and claims.

In the accompanying drawings, making a part of this application, Figure1, Sheet 1, represents a side elevation of one end of a latheillustrating certain features of our invention. Fig. 2, same sheet,represents an elevation of that end of the said lathe which faces towardthe left in Fig. 1. Fig. 3, same sheet, represents an end elevation ofcertain gear-4:0 wit, for operating the shafts for respectivelyoperating the longitudinal feed and the cross'feed. This view shows apart of the bed of the lathe and that in section. The elevation, die, istaken in the plane of the dotted line 3 3 of Fig. l and is that seen bythe spectator when standing at the left end of Fig. 1. Fig. 4, Sheet 2,isaviewin el.evation,excepting the V-ways, which latter are in section,and showing the supports for the jaws of the follow 'est, which supportswe have devised and employ for steadying shafts or rods to be operatedon or belonging to parts to be turned. Fig. 5, Sheet 2, is a view,partlyin elevation and partly in sect-ion, taken at the plane of thedotted line 5 5 of Fig. etand showingthat part of the device which atsaid plane faces toward the left in said Fig. 4.. Fig. 6, Sheet 2, is anelevation of detail of the follow-rest which holds the jaws. Fig. 7,Sheet 2, is a vertical transverse section of one of the jaws or holdersof the follow-rest shown in Figs. 4 and 5, this section being taken inthe plane of the dotted line 7 f Fig. 4. Fig. 8, Sheet 3 is a verticalcentral longitudinal section of the mechanism seen in Figs. 1 and 2,whereby the belt-pulleys are enabled to always keep the belt tautirrespective of which pulleys the belt is running upon. This section istaken in the plane of the dotted line 8 S of Serial No. 553,844. (Nomodel.)

1 Fig. 9, the operating shafts and rods being left in elevation. Fig.5), Sheet 3, is a vertical transverse section of the devices shown inFig. 8, said section being taken in the plane of the dotted line 5) 9 ofFig. 8, that face of the section being shown which faces toward theright hand of Fig. 8. Fig. 10, Sheet 2, is a rear elevation of thetail-stock and trans verse guideways and longitudinal V ways or guides,the latter in section, and illustrating another feature of ourinvention. Fig. 11, Sheet 3, is an end elevation of swinging link fortightening belt on cone-pulleys. On Sheet 4, Fig. 12 is an end view ofthe novel devices mediate accompanying parts. Fig. 13 represents a sideview of the same. Fig. 14 represents a top or plan view of the same.

A indicates the bed of the lathe.

A A respectively indicate the sides of the lathe-bed. These sides carrythe V-ways A on which certain adjustable portions of the lathe slide.

B indicates the headstock, and B B the respective end uprights of thesame.

O is the spindle,duly journaled in the headstock. The caps C of thejournal-boxes of said spindle and bolts 0 for securing the caps inplace, are shown in Fig. 1. The spindle is provided with the customaryscrew thread 0 and the turning-center On the spindle is. a cone-pulley Dof any desired number of steps. Here four are shown-to wit, D D D, and Dfor en ablin g the speed of rotation of the spindle to be changed andmaintained at will. At each end of the conepulley D is a gearwheel. Thegear-wheel E at the right-hand end is of large diameter, while thegear-wheel E of the left-hand end is of small diameter.

On a shaft F duly supported, is a small gear-wheel F meshing with theaforesaid gear E, and a large gear F, meshing with said gear E The gearsE and F are conventionally indicated by dotted lines in Fig. 2. Thepurpose of these gears F and F in combination with the gears E and E andthe spindle O and cone-pulley D, to increase the power, &c., is wellknown, and further description thereof is deemed unnecessary.

The spindleshaft O is extended to the left for s upportin g the steadyin g-j awe and the imbeyond the upright of the head-stock and carries asmall pinion G and a larger pinion G and cone-pulley H, having steps, asH H H and. IF, all of which are keyed to the spindle O.

The pinion G is capable of being reciprocated longitudinally on thespindle O, the pinion G when slid to the right, encircling the pinion G.The latter construction is a feature of invention more fully describedin another application for Letters Patent. 0011- sequentlyfurtherdescription of it is omitted herefrom.

At the end of the lathe is a frame I, termed a quadran t, pivoted at thepoint P-to wit, at and on the shaft I as hereinafter mentioned. Thisquadrant-frame has a handle I atits peripheral end for enabling it (theframe) to be raised and lowered. In the portion of the quadrant near itsperiphery is a slot I", and a set-screw bolt 1 is present therein andcarries a nut I the bolt 1 being fixed in the lathe. In this quadrantare two other slots, respectively lettered 1 and 1 The purpose of theseslots is to admit of the changing of the gear and for cutting left andright hand threads. Such changing of the gear being already well knownfurther description thereof is deemed unnecessary. In the upperleft-hand corner of this quadrant I and in the slot 1 is an adjustablebush J carrying a large gear J. A pinion J rotates on an adjustable bushJ, located in slot 1 and a larger gear-wheel J rotates on the shaft 1The intermediate pinion J 3 meshes with the gear J at one point and withthe gear J at another. The gear J meshes with pinion G or G as the casemay be, and is rotated thereby. These gears J, J and J may be severallyexchanged for gears of other diameters, thereby altering the speed anddirection of the shaft 1 whose use is now to be described. This shaft 1is duly journaled in the bed of the lathe or supports thereof, andwithin the bed it carries a pinion K, which latter is the first of aseries of gears, the others of this series and their connections andaccompanying mechanism being described as follows:

The pinion K turns loosely on shaft K. The latter shaft K is jonrnaledin the double journal-piece L, fixed to the side of the lathebed A Thepreferred means of connecting piece L to the bed-plate consists of aridge or elongated lug \V, which latter is received into a suitablerecess in the bed-plate and clamped in place there. The shaft K turnswithin such journal-piece L in opening W but to em able the wear of theparts to be taken up without the necessity of replacing the shaft K andthe journal-piece L we locate a bushing 7" within the opening of thejournalpiece L. The bushing \V is held in place by means of a ring L onshaft K at the righthand end of the journal-piece bearing against thatend of the latter (see Fig. 8, Sheet 3) foregoing construction both theshaft K and the bushing are held in place.

The preferred mode of providing the projection PK is by enlarging theshaft K".

thereby forming the enlarged portion Eli". On this enlarged portionrotates the gear K having the hub HK The gear is prevented from slidingto the left on the shaft K by means of the ring or collar L and isprevented from sliding to the right on shaft K by a projection PE K onthe latter shaft. The preferred mode of providing this projectionconsists in the further enlargement or the shaft K forming the enlargedportion E K. On this portion of the shaft is fixed a key or spline Mwhose length is parallei to the axis of said shaft K On the shaft K (E Kslides a sleeve M The latter engages and slides on the spline M and istherein compelled to rotate with the shaft. The sleeve M has on its leftend one half, M of the clutch. On its right-hand end is a projectingring M for moving the clutch M to the left. On the right-hand end of thegear K or its h u o is the other half, M, of the clutch. A projection Mon the right-hand end of the spline prevents the sleeve M withclutch-piece M". from sliding too far to the right and off the spline.

Vhen the clutclrpiece M is slid to the right, the gear K is disengagedtherefrom and from the shaft K and turns loosely thereon. \Vhen theclutch-piece M is moved to the left and into engagement with itscomplementary clutch-piece M, the gear K is in engagement with the shaftK Then the shaft K (the lead-screw shaft) is turned by the gear.

In the lower portion of the double journat box piece L rotates an endportion of the feedrod K A bushing K{ is fixed within the piece L andsurrounds the rod K". The rod K rotates within the bushing and isprevented from slipping lengthwise out of place by means of a ring K onthe red at one end or the bushing and a set-ring K on the red at theother end of the bushing, the rings being fixed on the red by means ofset-screws K substantially as shown.

On the feed-shaft, to the right of the serring K, is a gear K", having ahub N, provided with a right-hand end annular flange or projection N forsliding the gear K on the feedshaft 1U to the right or left, as occasionmav require.

Fixed to the rod K is a spline or feather N, and the hub of the gear Kengages this feather. Thus the gear K is compelled to turn with the rodK. A projection N at the right-hand end of the feather limits the movement of the gear to the right.

Belowthe double journal-piece L is a swinging journal-box piece L havingend pieces L L whereby the journal-box piece L is pivotally swung on therod R or rather on the bushing K of the latter, as shown. As the piecesL L closely embrace the box L between them the box-piece L is heldfirmly from slipping laterally-viz. in the direction of the length ofthe red X.

The box-piece L carries a shaft K rotatable therein. At the left thisshaft carries a cone-pulley P, fixed thereto. On the righthand end ofthe shaft is fixed the gear K This shaft K is prevented from slippingtoward the left by means of the bushing K and is prevented from slippingtoward the right bymeans of collar K. The right-hand point L is splitand the split-portion L secured together by a set-screw L". Thus bytighten ing the set-screw L the split portions are approxim ated and arecaused to tightly embrace the bushing K and thus hold the box-piece L ata desired angle in relation to the rod K Such setting operates totighten the belt running from cone-pulley P to cone-pulley H.

The speed of rotation of the feed-rod, and consequently the rapidity ofmovement of the feed,will be governed by the interchangeable gears G, Gand J There the gear G is exchanged for gear G the speed of the system JJ J will be increased, and by a proper exchange of gears for gear J thespeed of this system will be increased. Likewise by an inversearrangement the speed of this system will be diminished. Thus the speedof rotation of the cross-feed shaft K can be increased or diminished atwill.

These last-described portions of our invention are as follows: Tooperate the lead-screw shaft K by means of the gears, we cause theclutch-piece M to engage clutch M, and the lead-screw shaft will beoperated. The feedshaftis operated by the pulley-feed when gear K is atthe left and in engagement with pinion K hen the gear K is moved to theright out of engagement with pinion K and into engagement with gear Kand the clutch M is to the right and disengaged, the feed,- shaft isrotated. by the gears. \Vhen the pulley-gear is used, the gear K is outof engagement with the gear K One of the f unotions of the lead-screwshaft when revolving is well known. That function is to move or feedforward the screw-thread cutter or cutters in chasing (feeding) threadson the rod presented to be operated upon. The function of the leadscrewis to impart motion to the lathecarriage for any desirable purposeconnected with lathework where the carriage requires to be fed forwardat certain definite speeds.

It will be perceived that while gear K is in engagement with the gear Kit is out of engagement with the gear K Consequently there can be nobreakage of parts caused by the pulleys operating the gear K at a givenspeed while the gear K driven by the pulleys 011 cones H and P, move ata different rate of speed or in an opposite direction. Thus there is nonecessity of throwing ed the belt when'changing from a belt to a gearedfeed. Where the lead-screw shaft K is to rotate at a different speed,gear J 5 is to be exchanged forgear of a different diameter. Togetabeltfeed, the gear K is moved to the left and into engagement withthe gear K and will then be rotated by the latter through the agency ofthe cone-pulleys H and P, and the rate of speed of the feed-rod X willdepend upon the location of the belt on the two cone-pulleys H and P. Abelt-feed is often preferred under certain well-known conditions.

As to clutch M M it may be further remarked that in chasing threads theclutchpiece M is engaged with piece M, practically making this one pieceand revolving shaft K In using geared feed-that is to say, in employingthe gear to rotate the feed-rod K (without rotating shaft I )the gear Krevolves loosely on shaft K the clutch-piece M being disengaged fromclutch-piece M, and the gear K is moved over to the right and intoengagement with the pinion K Another feature of our invention relates tothe construction whereby the jaws serving to steady the work while beingoperated on are supported.

R R are the jaws, each having a runway R and a sliding jaw R thereon anda cap R".

A screw bolt passing through all and screwed into the support S securesthese parts in place. The sliding jaw R has a central slot R with astopsecured to the runway to limit the movement of the jaw. The support S ofthe jaws is of a novel form, and its arrangement on the slidingcross-slide or carriage T is novel. The support S consists of an upperportion or plate 8*, to which the jaws R are attached, and a lowerportion consisting of an arch S At each end of the arch straightsupportingpieces S are placed. The lower support S S of the arch spansthe narrow portion of the bed T of the carriage T. One of the supports Sis bolted to one side of the neck of this carriage T and the othersupport S is bolted to the other side of the neck of the carriage-bed,all substantially as shown in Figs. land 5. Beneaththe arch S slides thecross-slide carriage T on the slide or guide, the latter beingpreferably of a clove tail form, as shown, and interfitting thecorresponding recess of the carriage T This carriage has a transversegroove T To a suitable piece sliding in said groove T and set by aset-screw is connected a tool-post T which carries a tool, as T capableof operating on the article to be worked. A set-screw T sets the tool ata proper point in the post so that the tool can do its work on thearticle to be fashioned, shaped, out, bored, &c. In the present instancea rod T is shown being turned by the tool, while the steadyingjaws holdthe article (rod) steady and in place. The cross-slide carriage T ismoved along the slide and is set by suitable and well-known meansc. 9.,by a screw, due. (Not shown, because well understood.) This arrangementand construction afford a strong and perfectly rigid steady-rest,thereby insuring accurate work.

The construction of the arch is such as to allow the eross-slidecarriage T to slide beneath it and allow the tool to be broughtintoaction in the same vertical plane in which the steadying-jaws arelocated. The steadyingjaws are therefore of the greatest possibleservice in preventing the vibration of the article operated on at thevery locality where the tool in working causes the most flexion orvibration of the article which is being fashioned, the, and by steadying the latter article best enables the tool to do the best work.

The remaining feature of ourinvention relates to a graduation of thetail-stock slide, whereby great accuracy in the setting of the slide fora repetition of a given class of work is obtained. The construction isas follows: The tail-stock bed V carries the usual slide V on which thesuperstructure of the tailstock is supported. The rear faces of theslide V and bed V in the vicinity of each other and where they meet aregraduated in fractions of an inch. The relative position of the parts asto the scale being known while doing a piece of work the parts can bereadily and accurately reset when a like piece of work is to beperformed.

WVhat we claim as new and of our invention, and desire to secure byLetters Patent, 1s-

1. In a lathe, the combination of the gear K mounted loosely on shaft Koperating the lead-screw, and clutch M, M and sleeve, and feather withstop M interconnecting the gear K with shaft K and the gear K on shaft 1and interchangeable gears in turn operated by the gear on spindle-shaftO, and gear K", shaft K on which gear K is arranged to slide with thelength of said shaft, gear K on shaft K and located at one side of gearK and cone-pulley P on shaft K and cone-pulley H on spindle O forenabling the speed of the feed to be varied, substantially as and forthe purposes specified.

2. The combination, in a lathe, of the shaft K operating the 1ead-screwshaft, gear K thereon, clutch thereof sliding on said shaft and capableof engagement with the gear K the latter meshing with gear K, connectedto the spindle O by interchangeable intermediate gear, and the feed-rodK carrying the gear K sliding thereon, and capable of being brought intomesh with gear K gear K in mesh with the gear K when the latter is outof mesh with gear K shaft K thereof and cone-pulley P thereon, andcone-pulley H on spindle O, substantially as and for the purposesspecified.

3. In a lathe, the spindle, cone-pulley fl thereon, shaft K cone-pulleyPand gear K thereon, swinging supportL L L, the shaft K journaled in theswinging support L L L and feed-rod K forming the pivotal support of theswinging support L L L substantially as and for the purposes specified.

i. The combination, in alathe, of theleadscrew shaft K operated by thegear K thereon, clutch thereof sliding on said shaft and capable ofengagement with the gear K the latter meshing with gear K, connected tothe spindle O by interchangeable intermediate gear, and the feed-rod Kcarrying the gear K, sliding thereon and capable of being brought intomesh with gear K gear K in mesh with the gear K when the latter is outof mesh with gear K shaft 1" thereof and cone-pulley P thereon, andcone-pulley H on spindle O, and the swinging support L L L", in whichshaft K is journaled, and which is pivoted on shaft K substantially asand for the purposes specified.

5. The combination, in a lathe, of the leadscrew shaft K operating thegear K thereon. clutch thereof sliding on said shaft and capable ofengagement with the gear K the latter meshing with gear K, connected tothe spindle C by interchangeable intermediate gear, and the feed-rod Kcarrying the gear K sliding thereon and capable of being brought intomesh with gear K gear K in mesh with the gear K when the latter is outof mesh with gear K shaft K thereof and cone-pulley P thereon, andcone-pulley H on spindle C, and the swinging support L L L in whichshaft K is journaled,'and which is pivoted on shaft K and the support Lfixed to the bed .9. and having a journal-bearing for the shafts K and Ksubstantially as and for the purposes specified.

6. The combination of gear K and gearing for operating the same, andjournal-box piece L, and shaft K therein and intermediate bushing havingannular enlargement L, set-ring L L at one end of the shaft K and ring Lat the other end of the journal-box piece L, enlarged portion EK ofshaft K next to the ring L the gear K having the hub HK and theclutch-piece ll.

enlarged portion E K of shaft K against which the hub of gear K abuts,and clutchpiece M sliding on the shaft K, and feather M M, on the shaft,substantially as and for the purposes specified.

7. The combination of gear K and gearing for operating the same, andjournal-box piece L, and shaft K therein and intermediate bushing Vhaving annular enlargement L. set-ring L L at one end of the shaft K andring L at the other end of the journaibox piece L, enlarged portion EKof shaft K", next to the ring L the gear K having the hub HK and theclutch-piece M, enlarged portion E K of shaft K against which the hub ofgear K abuts, and clutch-piece 31 sliding on the shaft K, and feather M)1 on IIO the shaft, and feed-rod K in the journal-box piece L andbushing K surrounding the rod K therein, set-ring K K", at end of theshaft, and set-ring 1C, K at the other end of the bushing, and gear K,sliding on rod K and feather N N substantially as and for the purposesspecified.

S. The combination of gear K and gearing for operating the same, andjournal-box piece L, and shaft K therein, and intermediate bushing Whaving annular enlargement L, set-ring L L at one end of the shaftK andring L at the other end of the journal-box piece L, enlarged portion EKof shaft K next to the ring L the gear K having the hub'l'll'f, and theclutch-piece M, enlarged portion E K of shaft K against which the hub ofgear K abuts, and clutch-piece M sliding on the shaft K and feather M Mon the shaft, and feed-rod K in the journalbox piece L and bushing Ksurrounding the rod K therein, set-ring K K at end of the shaft, andset-ring K K at the other end of the bushing, and gear K sliding on rodK and feather i N and link-piece L having linleeyes L L respectivelyembracing the bushing K at the adjacent ends of the journal-box piece,and capable of being tightened thereon, and shaft K in the part L andgear K thereon, and pulley-cone P, pulley-cone II on spindle C,substantially as and for the purposes specified.

9. The combination of lead-screw shaft K gear Y and clutch M, M thereon,journalbox piece L, feed-rod K in journal-box, bushing K therein andaround the shaft K and its feather on rod K oscillatory piece L shaft Ktherein carrying conepulley P for use in connection with a complementaryconepulley, and gear K capable of engagement with gear K", and the eyesL L embracing the bushing, and capable of being tightened thereon,substantially as and for the purposes specified.

10. In a lathe,thc combination of the steadying-jaws, and the carriage,and the arch for supporting the superstructure to which the jaws areattached, and having legs S respectively connected to the narrow neck ofthe carriage, between the V-ways of thelathe, and the cross-slidingcarriage T and its guideway located on the main carriage, transyerselythereto and extending between the legs 8* and under the arch S thecross-sliding carriage being adapted to slide beneath the arch andbetween the legs S substantially as and for the purposes specified.

11. In a lathe, the combination of the Worksteadying jaws, an arch forsupporting the jaws, and having legs connecting the arch to thecarriage, and the cross-sliding carriage T carrying the tool andsliding'beneath the arch, and carrying the tool-post, substantially asand for the purposes specified.

12. In a feed mechanism for lathes, the combination of the lead-screwshaft,feed-rod, and cone-pulley shaft K", stationary mounting for thelead-screw shaft and feed-rod, and swinging bearing L of saidcone-pulley shaft K and the pinions Y and K respectively on thelead-screw shaft and feed-rod, and the pinion K on shaft K substantiallyas and for the purposes specified.

13. In a feed mechanism for lathes, the combination of the lead-screwshaft, feedrod and cone pulley shaft K stationary mounting for thelead-screw shaft and feed-rod, and swinging bearing L of saidcone-pulley shaft K and the pinion K and clutch of leadscrew shaft, andpinion K splined on the feed-rod, and pinion K fixed on the conepulleyshaft, substantially as and for the purposes specified.

RlCI-IARD K. LE BLOND. NICHOLAS D. CHARD.

Attest:

E'ow. S. GATES, JOSEPH SPAHN, G. J. McDIAnMID.

